The Origami Forum

I have problem in participating in the book I was trying to ask how can I email them, like I know that they open submissions on June on their website but I want to ask do you need to be a joas member they say that on their guide, And how I could be they say: also Please send a substitute for the print sample such as PDF. Please send
In principle, we will not return the media, data, or works. what does that mean . And will they even make a convention this year.